i have both the xtr in 6-24x and a slll in 6-24x and the 8-32x both are the new models, the older model is good but the new glass and a few other things were changed on the new models for the good. put it this way i have burris,nikon,had leupolds and sightron scopes and by far sightron is far superior to any of the mentioned scopes above. i really like my xtr but it is not in the the same class as the sightrons by any means but the xtr is a tuff scope and i like it a lot but i sure love them sightrons a little better, if you look through one you'll understand what i mean by awesome!
. Check out the reviews jason did on 6mmbr and go to daily buliten and click on optics or search google type in 8-32x56 sightron reviews,it had many things better than the nightforce and his second review said that the scope tracked better than what his gun could shoot. and believe me my sightrons track more percise than any other scope i own. Thats why i got rid of my 8-25x and 6-20x leupold vx3s to get my 2 sightrons and that was the best thing i have ever done in scope choosing.